JPH0247022Y2 - - Google Patents
Info
- Publication number
- JPH0247022Y2 JPH0247022Y2 JP1985053293U JP5329385U JPH0247022Y2 JP H0247022 Y2 JPH0247022 Y2 JP H0247022Y2 JP 1985053293 U JP1985053293 U JP 1985053293U JP 5329385 U JP5329385 U JP 5329385U JP H0247022 Y2 JPH0247022 Y2 JP H0247022Y2
- Authority
- JP
- Japan
- Prior art keywords
- drum
- carriage arm
- slider
- slider shaft
- shafts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000005484 gravity Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Character Spaces And Line Spaces In Printers (AREA)
- Facsimile Heads (AREA)
- Ink Jet (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案はドラム走査型のオンデマンドヘツドを
用いたインクジエツトプリンタの改良に関するも
のである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of an inkjet printer using a drum scanning type on-demand head.
第4図は従来装置のインクジエツトプリンタに
おける印写部の斜視図、第5図はキヤリツジアー
ムとスライダシヤフトとの位置関係を示す説明
図、でありドラム21の前,後域にドラム21と
平行に配設した一対のスライダシヤフト22,2
3に、円弧状をなし、中間部に複数のインク噴射
ヘツド25a,25b,25c,25dを設けた
キヤリツジアーム24の両端を、夫々ガイド筒2
4a、ローラ24bを用いて摺動可能に装架して
ある。ドラム21は図示しないモータに連繋され
て矢符方向に高速で回転駆動せしめられ、インク
噴射ヘツド25a,25b〜25dをドラム21
の周方向に対向させる、所謂主走査を行わせるよ
うにしてあり、一方キヤリツジアーム24はその
一端に連繋したワイヤ24cに連繋させた図示し
ないモータの駆動によつてキヤリツジアーム2
4、還元すればインク噴射ヘツド25a,25
b,25c,25dをドラム21表面と対向させ
つつその軸方向へ移動、即ち副走査を行わせるよ
うになつている。
FIG. 4 is a perspective view of the printing section in a conventional inkjet printer, and FIG. 5 is an explanatory diagram showing the positional relationship between the carriage arm and the slider shaft. A pair of slider shafts 22, 2 arranged
3, both ends of the carriage arm 24, which has an arc shape and has a plurality of ink ejecting heads 25a, 25b, 25c, and 25d in the middle part, are connected to the guide cylinder 2, respectively.
4a and rollers 24b so as to be slidable. The drum 21 is connected to a motor (not shown) to rotate at high speed in the direction of the arrow, and the ink ejecting heads 25a, 25b to 25d are connected to the drum 21.
The carriage arm 24 is made to face each other in the circumferential direction to perform so-called main scanning, while the carriage arm 24 is driven by a motor (not shown) connected to a wire 24c connected to one end of the carriage arm 24.
4. If reduced, the ink ejecting heads 25a, 25
b, 25c, and 25d are moved in the axial direction while facing the surface of the drum 21, that is, sub-scanning is performed.
ところで上述した如き従来装置にあつては、第
5図に明らから如く、前側のスライダシヤフト2
2は後側のスライダシヤフト23よりもhだけ低
く設置され、またキヤリツジアーム24の重心G
は各スライダシヤフト22,23のいずれよりも
著しく高くなつているため、スライダシヤフト2
2,23とキヤリツジアーム24との摺動機構に
がたつきが存在すると、キヤリツジアーム24の
移動停止の都度重心位置が変化し円滑さが欠け、
キヤリツジアーム24、換言すればインク噴射ヘ
ツドに振れが生じ印写ずれの原因となつていた。
By the way, in the conventional device as described above, as is clear from FIG. 5, the front slider shaft 2
2 is installed lower than the rear slider shaft 23 by h, and the center of gravity G of the carriage arm 24 is
is significantly higher than either of the slider shafts 22 and 23, so the slider shaft 2
If there is any looseness in the sliding mechanism between 2 and 23 and the carriage arm 24, the center of gravity will change each time the carriage arm 24 stops moving, resulting in lack of smoothness.
The carriage arm 24, in other words, the ink ejecting head, has been shaken, causing printing misalignment.
本考案はかかる事情に鑑みてなされたものであ
つて、その目的とするところはキヤリツジアーム
の重心位置をスライダシヤフトを結ぶ線に近接位
置せしめることによつて、キヤリツジアームの移
動に伴う重心の振れを少なくし、キヤリツジアー
ムの移動を円滑にし、またキヤリツジアームとス
ライダシヤフトとのがたつきの影響も可及的に抑
制し得、印写ずれ防止機能を大幅に向上し得るよ
うにしたインクジエツトプリンタを提供するにあ
る。
The present invention was developed in view of the above circumstances, and its purpose is to reduce the swing of the center of gravity due to movement of the carriage arm by locating the center of gravity of the carriage arm close to the line connecting the slider shafts. To provide an inkjet printer in which the movement of a carriage arm is smooth, the influence of rattling between the carriage arm and a slider shaft can be suppressed as much as possible, and the function of preventing printing misalignment can be greatly improved. be.
以下本発明をその実施例を示す図面に基づき具
体的に説明する。第1図は本考案に係るインクジ
エツトプリンタの模式図、第2図は同じくキヤリ
ツジアームの拡大斜視図、第3図はキヤリツジア
ームとスライダシヤフトとの位置関係を示す説明
図であり、図中1はドラム、2はフロントスライ
ダシヤフト、3はリアスライダシヤフト、4はキ
ヤリツジアーム、5a,5b,5c,5dはイン
ク噴射ヘツドを示している。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below based on drawings showing embodiments thereof. Fig. 1 is a schematic diagram of an inkjet printer according to the present invention, Fig. 2 is an enlarged perspective view of the carriage arm, and Fig. 3 is an explanatory diagram showing the positional relationship between the carriage arm and the slider shaft. , 2 is a front slider shaft, 3 is a rear slider shaft, 4 is a carriage arm, and 5a, 5b, 5c, and 5d are ink ejecting heads.
ドラム1は両端部を図示しない軸受に枢支さ
れ、一方の軸はここに設けたプーリ及びこれに張
設したベルトを介してモータM1に連繋され、該
モータM1の駆動によつて高速度で回転駆動せて
められるようになつている。ドラム11の前、後
域にはフロントスライダシヤフト2、リアスライ
ダシヤフト3が互いに平行で、且つ水平に配設さ
れ、この両シヤフト2,2に渡してキヤリツジア
ーム4が両シヤフト2,3の長手方向に摺動可能
に載架されている。 Both ends of the drum 1 are pivotally supported by bearings (not shown), and one shaft is connected to a motor M1 via a pulley provided here and a belt stretched over the drum, and is driven by the motor M1 . It is designed to be able to be rotated at different speeds. In the front and rear areas of the drum 11, a front slider shaft 2 and a rear slider shaft 3 are arranged parallel to each other and horizontally, and a carriage arm 4 extends across both shafts 2, 2 in the longitudinal direction of both shafts 2, 3. It is slidably mounted on a shelf.
キヤリツジアーム4は2枚の板材4a,4bを
その中間に介在させた連結軸4c、ブロツク4
d,4e等にて平行、且つ一体的に連結して構成
されており、側面視では第2,3図に明らかな如
く上面側は略平坦に、またドラム1の表面と対向
する下面はドラム1表面に沿うよう略円弧状に形
成され、ここに夫々取付台6a,6b,6c,6
dを用いてインク噴射ヘツド5a,5b,5c,
5dが夫々ドラム1表面に対向せしめる向きにし
て着脱可能に装着されている。 The carriage arm 4 includes a connecting shaft 4c with two plates 4a and 4b interposed between them, and a block 4.
d, 4e, etc. are parallel and integrally connected, and when viewed from the side, as shown in FIGS. 2 and 3, the upper surface side is approximately flat, and the lower surface facing the surface of the drum 1 is the drum. 1. The mounting bases 6a, 6b, 6c, and 6 are respectively formed in an arc shape along one surface.
Ink ejecting heads 5a, 5b, 5c,
5d are removably mounted so as to face the surface of the drum 1, respectively.
キヤリツジアーム4の一端部であつて、リアス
ライダシヤフト3と対向する側にはガイド筒4f
が、またフロントスライダシヤフト2と対向する
他端側には上,下一対の摺動駒4g,4hが夫々
前記ブロツク4e,4dに固定されており、ガイ
ド筒4fはリヤスライダシヤフト3に摺嵌し、ま
た摺動駒4g,4hは上下からフロントスライダ
シヤフト2に摺接せしめることによつてドラム1
の軸方向に摺動可能に装架されている。ブロツク
4eにはループ状にしたワイヤ4iが連結されて
おりモータM2の駆動によつてスライダシヤフト
2,3の軸方向、換言すればドラム1の軸方向に
往復移動せしめられるようになつている。 A guide tube 4f is provided at one end of the carriage arm 4 on the side facing the rear slider shaft 3.
However, at the other end facing the front slider shaft 2, a pair of upper and lower sliding pieces 4g and 4h are fixed to the blocks 4e and 4d, respectively, and a guide tube 4f is slidably fitted onto the rear slider shaft 3. In addition, the sliding pieces 4g and 4h are brought into sliding contact with the front slider shaft 2 from above and below, so that the drum 1
is mounted so as to be slidable in the axial direction. A looped wire 4i is connected to the block 4e so that it can be reciprocated in the axial direction of the slider shafts 2 and 3, in other words, in the axial direction of the drum 1, by the drive of a motor M2 . .
そしてキヤリツジアーム4を上述の如きフロン
トスライダシヤフト2、リアスライダシヤフト3
に装架した状態においては第3図に示す如く、そ
の重心G0は両スライダシヤフト2,3の中心間
を結ぶ線から僅かに寸法bだけ高く位置するのみ
で、極めて接近した状態に構成されている。 Then, the carriage arm 4 is connected to the front slider shaft 2 and the rear slider shaft 3 as described above.
As shown in Fig. 3, when the slider shaft is mounted on the slider shaft, its center of gravity G0 is located only a distance b higher than the line connecting the centers of both slider shafts 2 and 3, and is very close to each other. ing.
以上の如く本案品にあつてはキヤリツジアーム
の重心をその両端部を載架するスライダアーム中
心線間を結ぶ線に接近位置するよう構成したから
キヤリツジアームの移動,停止等に伴う振れが少
なく、キヤリツジアームとスライダシヤフトとの
摺動部に存在するがたつきの影響も少なくなり、
円滑な移動が可能となつて印写ぶれ防止機能が格
段に向上する。そして本考案では、スライダシヤ
フト自体は特別な形状とする必要がなく、従来品
からの大幅な設計変更なしにこの構成を採り得る
など、本考案は優れた効果を奏するものである。
As described above, in this product, the center of gravity of the carriage arm is located close to the line connecting the center lines of the slider arms on which both ends of the carriage arm are mounted, so there is less vibration due to movement or stopping of the carriage arm, and The influence of rattling that exists in the sliding part with the slider shaft is also reduced,
Smooth movement becomes possible and the ability to prevent blurring in printing is greatly improved. In the present invention, the slider shaft itself does not need to have a special shape, and this configuration can be adopted without major design changes from conventional products, and the present invention has excellent effects.
第1図は本案品の斜視図、第2図は本案品の要
部の拡大斜視図、第3図はキヤリツジアーム、ス
ライダシヤフトの位置関係を示す説明図、第4図
は従来品の拡大斜視図、第5図は従来品における
キヤリツジアームの説明図である。
1……ドラム、2……フロントスライダシヤフ
ト、3……リアスライダシヤフト、4……キヤリ
ツジアーム、5a,5b,5c,5d……インク
噴射ヘツド、6a,6b,6c,6d……取付
台。
Figure 1 is a perspective view of the proposed product, Figure 2 is an enlarged perspective view of the main parts of the proposed product, Figure 3 is an explanatory diagram showing the positional relationship of the carriage arm and slider shaft, and Figure 4 is an enlarged perspective view of the conventional product. , FIG. 5 is an explanatory diagram of a conventional carriage arm. 1...Drum, 2...Front slider shaft, 3...Rear slider shaft, 4...Carriage arm, 5a, 5b, 5c, 5d...Ink ejection head, 6a, 6b, 6c, 6d...Mounting base.
Claims (1)
後域に前記ドラムと平行に配設した2本のスライ
ダシヤフトと、前記ドラムの軸方向に移動可能に
前記2本のスライダシヤフトに掛け渡され、前記
ドラムと対向する面が前記ドラム表面に沿うよう
略円弧状に形成されたキヤリツジアームと、この
キヤリツジアームの前記ドラムとの対向面に配設
されたインクヘツドとを備えたインクジエツトプ
リンタにおいて、 前記キヤリツジアームはその重心が前記両スラ
イダシヤフトを結ぶ線上に近接して位置せしめる
べく構成したことを特徴とするインクジエツトプ
リンタ。[Scope of claim for utility model registration] The drum on which the printing paper is mounted, the front of this drum,
two slider shafts disposed parallel to the drum in the rear region; and a slider shaft movably spanned over the two slider shafts in the axial direction of the drum, with a surface facing the drum paralleling the drum surface. In the inkjet printer, the carriage arm is provided with a carriage arm formed in a substantially arc shape and an ink head disposed on a surface of the carriage arm facing the drum, wherein the center of gravity of the carriage arm is close to a line connecting the two slider shafts. An inkjet printer characterized in that it is configured so that it can be positioned as
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985053293U JPH0247022Y2 (en) | 1985-04-09 | 1985-04-09 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985053293U JPH0247022Y2 (en) | 1985-04-09 | 1985-04-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61168957U JPS61168957U (en) | 1986-10-20 |
JPH0247022Y2 true JPH0247022Y2 (en) | 1990-12-11 |
Family
ID=30574016
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1985053293U Expired JPH0247022Y2 (en) | 1985-04-09 | 1985-04-09 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0247022Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0796324B2 (en) * | 1986-05-30 | 1995-10-18 | 富士写真フイルム株式会社 | Scan head guide structure |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55115836U (en) * | 1979-02-07 | 1980-08-15 |
-
1985
- 1985-04-09 JP JP1985053293U patent/JPH0247022Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS61168957U (en) | 1986-10-20 |
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